Brick press and the like



R, NAVET v BRICK PRESS AND THE LIKE Filed Feb. 14. 1924 Nov. 17

Patented Nov. 17,1925 i V UNITED STATES, PATENT OFFICE} I I .RoDoLrHn NAvEnoF 'IUBIZE,g1311.713(i-I'tlfgilti.1 3310K rnnss AND LIKE. V v V 1 Application filed-February le, 1924 Serial No; 632;792. I i

To all whom it may concern: v to be moved longitudinally within said Be it known that I, RonoLrHE NAVET, a guide, during itsYswinging-movement and subject of the King ofthe Belgians, and the corresponding upward movementof the resident of Tubize, Belgium, have invented piston. i i 1" 6 certain new and useful Improvements in It will be'obv'ious thatthe novel principle Brick Presses and the like, of which the folevolved may be applied to hand-presses as lowing is a specification. 7 well as to engine-presses.

Y My present invention relates to brick; v In the system described hereinbefore'the presses. and more particularly to the contransmission of the power-of the beam fto 10 struction and arrangement of pistons therethe piston will be effected directly,- whereby the piston and beam willbe ra'pidlyworn 60.

for. Y a a In the known presses for the manufacture out at-the contact points This wear will of: bricks, tiles, plates and similar articles, be easily understood if'itfis considered that the pressure pistons moved upwardly by the piston; moves along atrue vertical line 15 the action of 'a beam, must be'moved along whilst-the beam moves in a verticalplane y a true vertical line, thexcor'rect operation around its fixed axis, so that there will be of the machine andthe perfect shape of the a frictional engagement between-the piston I pressed articles being only obtainable if and beam. As the power. transmitted is a there is no clearance between the cells of a considerable one,,the friction-will. be'proi 20 the mould or moulds and themouldparts portional and the weara-rapid'one. -More-.

carried by the piston. .If the piston is not over the said friction will producefacon-v 7 moved along a true vertical line,'said'parts siderable decrease of the pressure on. the of the moulds will be soon worn out.q piston during its upward movement, that is Now the pressure beam receiving a-swinga decrease of efficiency -A s the 'wearfpro- -56 ing mov ment in ;a vertical plane, if as in ceed's, the stroke to be'run through by the 7 actual presses, said beam is .pivotally con piston for the production of pressed articles I nected to or made integral with the pressure of equal thickness will increase, whereby the i piston, the movement of the' latter cannot. balance and driving parts thereof will be be perfectly vertical. I i 1 caused to run through a longer stroke, that 30 According to my present invention, the is, there-will be a further decreaseofefli-- beamand piston are independent; from each ciency or a productionof:irregular products. to other, the beam pressing freely" under the [Tl1e invention also contemplates {an ar piston which is provided with one or two rangement having for itsobject to minimize vertical guiding rods .slidingin 'sleeves inthe wearfm'entioned and to enable thewear 3 5 tegral with the'frame; It'is preferred to use to :be easily-and rapidly compensatedwith the twoguiding rods'ystem, particularly for out it being necessary to replace or repair pistons with a plurality ofzmoulds, the the" beam or piston." .To this end, I insert steadiness being moresurely secured. Broade between the beam and piston a series of 1y stated theinvention comprises a guiding freely revolvingrollers and above which is 7 "4'0 arrangement forthe piston and .an arrangeplaced a plate forming carriage, the lon- V ment whereby the piston and beam ;Will be gitudinal rate ofinovement of" which core01 moved upwardly in unison along a true iverresponds substantially to the length of the ticallin'e, the beam being at the'same time horizontal projection of the movement of f enabled to. move longitudinally. with respect a point of the beam located on-the vertical to the piston. The latter maybe provided axis of the piston. Thus during the upward at the. bottom and centrally with avertical movement of the piston, vertical and longia guide engaged with clearance by the beam 'tudinal movements willbeimparted to said: soas to preventthe latter'from'being moved plate, and the latter will. be brought aulaterally, at the sametime enabling the same tomatically' back to. its position dur'ing the I tion. 'By this method I furthermore provide for a certain clearance permitting of downward movement or unmoulding operarthe piston being guided in a more practical way.

Owing to the use of a plurality of freely revolving rollers adapted to be moved horizontally to a slight extent, the wear of the parts will be considerably reduced and any gripping will be avoided. MIoreover the only part subject to wear will be the plate arranged above the rollers (said plate being made of softer metal than the piston) so that the parts may be re-adjusted by replacing said plate. 7 i

In the accompanying drawings Fig. l is a view in elevation, partly in section, of the brick press, showing the parts in their normal positions.

Fig. 2 is a similar view'showing the parts in their operative positions.

1 designates the depending end of the piston carrying two vertical guiding rods 2, which are slidably engaged in sockets or sleeves Ssecur'ed to .the frame of the machine. 4 is the pressure'beam to which move ment is imparted in any desired way and which swings around its fixed pivot In the example shown said beam extends belowthe end of the piston between thevertieal rods 2. I V

, The upper face of the beam is provided below the piston with two small angle-irons 6, 6 between which several rollers 7 are arranged on the beam. The space between the angle-irons 6 is filled with rollers, a

slight clearance of some millimeters being however provided between the rollers.

.Arranged on said rollers is a metal plate .8, made of metal which is less hard than the metal of the rollers, the beam and the piston, so that the wear will be produced only on said plate. Two small angle-irons or two fiat bands or strips 9 are secured to the rims of the plate 8, so as to hold the latter'continuou'sly on the angle-irons 6 and thus form- 7 .ing a cover fitting nonhermetically, the

ie'iigth of said plate being such that it may be moved longitudinally on the rollers to a distance of 20 to millimeters, that is a len th substantially equal the length of the.

ver l projection of thearc through which is moved any point of the beam located on the vertical axis of the piston. 1

.30 is the discharging lever, pivoted at '11 and actuated in any desired way (of course anv other device for lifting the articles out er Hie moulds may be used). Said lever 10 carries a rod 12 rigidly secured thereto. Said rod extends for instance through anobiong opening or slot 18 in the beam and forms with the lever 10' an angle so that, when thepiston is at the end of its pressure stroke (that is prior to its last upward'movement for lifting the articles out of the moulds), said rod will engage the rim of the plate 8.

As the beam is raised for producing pres sure the plate8 will be moved vertically with i it and also longitudinally, thus sliding over the rollers and below theend of the piston. As the articles are liftedout of the mould the piston will carry the lever 10.with it upwardly, and the rod 12 will bring the plate 8 back to its initial position, wherein it will remain until the beam will again be raised.

(if course the recoil of said plate may be i effected in any other way, say by the action of a spring or springs for instance.

Having now fully described my Saidinvention, what I claim and desire to secure by Letters Patent, is:

1. An improved piston arrangement. in presses for' the manufacture of bricks, tiles and similar articles comprising in combina-- tion the piston, vertical guiding rods rigidly secured to said piston, fixed guides engaged by said guiding rods, a 'pivotally arranged pressure beam freely engaging the depending end of said piston so that it w-illbe free to be moved longitudinally with respect to said piston, and a wearcompensating' antifriction member interposed between the end of the piston and the pressure beam.

'2. In a piston arrangement for presses for the manufacture ofbricks ,tiles and similar articles, the combinationof a piston, a fu l crumed pressure beam, a series of rollers in serted between said piston and beam and adapted to freely run between thesame, two angle-irons secured on the upper face ofthe beam to enclosesaid rollers. with as ui-table clearance, a plate madefof softmetal placed upon said'rollers andon which rests the piston, said platebeing somewhat longer than the distance between-said angle-irons so that it may be moved vertically' and at the same time longitudinally, suitab'lewstops at the rims of said plateadapted'to engage said angle-ironsto limit the longitudinal move-.

ments of. said plate, and means for "effecting the recoil of said plate during or after the operationof lifting thearticles' out of the moulds, substantially as set forth.

In a piston press, a piston movable in rectilinear li-nes, a pressure beam movable in. an are for operating the piston, and an anti-fricton member interposed between the pressure beam and end of the piston,'said anti-fricton member including a plate more responsiveto wear than other portions of the member, whereby to direct the wear of the parts to the plate 'to permit renewal of said plate as a substantial compensation for wear.

at. In a piston press, a piston movable in rectilinear lines, a pressure beam movable in 1 an arc for-operating the piston, an antifriction member interposed between the piston and beam and comprising a plurality -'of rollers, means arranged on the beam for holding the rollers against bodily displace ment, a plate arrange upon said rollers and directly engaging the bottom of the piston.

5. In a piston press, a piston movable in rectilinear lines, a pressure beam movable in an are for operating the piston, an antifriction member interposed between the piston and beam and comprising a plurality of rollers, means arranged on the beam for n w 1 cf holding the rollers against bodily dis lace-f m ment, a plate arranged upon said rollers and Y directly engaging the bottom of the piston,

RODOLPHE NAVET. 

